USA ZIP Code Lookup

Enter a five-digit ZIP code to request the associated place names, state, and coordinates from Zippopotam.us. This third-party lookup is not a direct USPS validation and does not confirm ZIP+4 or delivery eligibility.

What is a ZIP Code?

ZIP stands for Zone Improvement Plan. US ZIP codes were introduced by the United States Postal Service (USPS) in 1963 to support mail sorting. ZIP codes describe postal delivery areas, which do not always match city or county boundaries.

What Information Can I Find?

The external lookup can return place names and latitude/longitude coordinates associated with a ZIP code. For a complete mailing address, ZIP+4, or delivery decision, verify the information with the United States Postal Service.